[Repeater-Builder] Re: Iso Tee Help again
Mathew, Some one showed me this more than forty years ago. I use a slightly different method than has been suggested so far. Get a UHF tee that the male unscrews from. Unscrew this male pin. Slide out the center double female connector. Saw off one side of this female section just past the threaded hole in the middle. De-burr the piece you have left and reassemble the tee. Mark the female side with no center with a black sharpie or red paint. If you don't designate the iso end you will eventually forget and screw up! Since it has both male and female connectors you won't need anymore adaptors to use it. I often just leave one in line. Have not tried this yet with an N tee, (they're rare and expensive) but it might work. 73, Al, K9SI I know I've brought this subject up before, but have lost all the emails about it. I need some help building an RF Coupler Iso-Tee to begin learning to adjust duplexers. Someone gave me some instructions on how to build one out of a pl259/so239 t adapter. Anyone have this information, or the where abouts of where to find such a kritter on the market. Thanks. Mathew Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Talking Clock
or IRLP .. for that matter .. or build one .. cant be that hard .. do a search for the info .. Best of luck Rick On 23 Dec 2004 at 19:09, Coy Hilton wrote: One way of doing it is Install Echolink, It doesn't have to be connected to internet for this, and install Echotime. This way you can add a scheduled message or two. 73 AC0Y --- In Repeater-Builder@yahoogroups.com, KA9QJG [EMAIL PROTECTED] wrote: Can anyone tell Me of A Software Talking Clock program , I had a old radio Shack one that I had modified yrs ago on the repeater and it went bad and it is no longer made. Thanks Don Happy Holidays Yahoo! Groups Links . -. Rick Szajkowski VA3 RZS Charlotte Darby VA3 CMR Node Owners of IRLP Node 2120 Peterborough Ont Canada Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Fw: [Repeater-Builder] Did measurement of inductors change???
Sorry, their search engine does not allow that without a previous browser session. Just go to http://www.digikey.com and enter 2.2mH choke in the search window. Select fixed(7 items). there are a few to pick from. Wade - KR7K - Original Message - From: Wade Lake [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 5:38 PM Subject: Re: [Repeater-Builder] Did measurement of inductors change??? John, I did a quick search and found those at Digikey, follow this link. http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter Wade - KR7K - Original Message - From: JOHN MACKEY [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 10:07 AM Subject: Re: [Repeater-Builder] Did measurement of inductors change??? Yea, the difference between uH (Micro-henries) mH (mil-henries) is what I've always understood since my earliest training. But the fact that I have been unable to fine mH chokes only found uH chokes made me wonder if the measurement system of inductors had changed!! (sort of like when capacitor measurements changed from uuF to pF) I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. -- Original Message -- Received: Wed, 22 Dec 2004 09:35:50 PM CST From: Joe Montierth [EMAIL PROTECTED] --- JOHN MACKEY [EMAIL PROTECTED] wrote: I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Did measurement of inductors change???
John, I did a quick search and found those at Digikey, follow this link. http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter Wade - KR7K - Original Message - From: JOHN MACKEY [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 10:07 AM Subject: Re: [Repeater-Builder] Did measurement of inductors change??? Yea, the difference between uH (Micro-henries) mH (mil-henries) is what I've always understood since my earliest training. But the fact that I have been unable to fine mH chokes only found uH chokes made me wonder if the measurement system of inductors had changed!! (sort of like when capacitor measurements changed from uuF to pF) I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. -- Original Message -- Received: Wed, 22 Dec 2004 09:35:50 PM CST From: Joe Montierth [EMAIL PROTECTED] --- JOHN MACKEY [EMAIL PROTECTED] wrote: I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? The m is for milli, the u (with the tail) is for micro. They are both valid, RF frequencies usually use microhenries(u) and audio range will use millihenries (m). If you order the wrong one you'll only be off by a factor of 1000! Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Talking Clock
Don, I have a software-based clock in a Pacific Research repeater controller that I finally had to disable because it couldn't keep time. A common problem with software clocks is that they gain or lose time depending upon the amount of activity. In my opinion, that lack of accuracy is unacceptable. One solution is to use the hourly 1400 Hz tone burst from WWV to reset a software clock every hour, so that any accumulated error is corrected before it becomes significant. That's one of my back-burner projects that may yet see the light of day! 73, Eric Lemmon WB6FLY KA9QJG wrote: Can anyone tell Me of A Software Talking Clock program , I had a old radio Shack one that I had modified yrs ago on the repeater and it went bad and it is no longer made. Thanks Don Happy Holidays Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Advice on Business Band repeater
If a guy were to have a GROL license and he built his own repeater to meet type acceptance(or close to), would it be classified as being so? ~Benjamin, KB9LFZ --- KI4AWK [EMAIL PROTECTED] wrote: I am a ham who is contemplating building a business-band repeater. I have a few questions that maybe you guys can answer and save me hours of reading and searching. I want to do this so that my family can stay in touch. The business license would be in the name of the family farm. I know that not everyone in my family is interested in radio enough to become a ham, but would definitely own a radio if they could communicate reliably. Cell phones are horrible. I do not want to use GMRS frequencies for three reasons: I am not impressed with the policing of the GMRS frequencies. Anyone can get a GMRS radio, and the line between GMRS and FRS and CB seems to be very blurry. I don't want my mom to be the one listening when someone starts being rude on our frequency. Reason two is that I want to be able to hook up a phone patch. This is strictly forbidden in GMRS. Reason three is the type acceptance rule that prohibits several quality radios from being used in GMRS. My questions: What kind of cost am I looking at for a repeater pair license? Does each user need a separate license? cost per user? Can I do the research and find a frequency pair myself, or do I have to go through a coordinator? (if so, what does that cost?) (We live in a rural area, Thomasville, GA. Finding a pair should not be hard. I am hoping for a pair in the 460 band, as I have a very nice mastr II for that band.) I have been monitoring a specific frequency, and did research through the FCC website on it for users in my area. What else should I do to get started? John Clark - KI4AWK = - ~Ben, KB9LFZ Got your radio on and listening? Then KEY the radio and say that you are! LET US USE WHAT WE HAVE!! __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] ECHOTIME help
Does anyone have a copy of the free version of Echotime??? I am very interested in trying it. They no longer have it on the site. James Coy Hilton wrote: One way of doing it is Install Echolink, It doesn't have to be connected to internet for this, and install Echotime. This way you can add a scheduled message or two. 73 AC0Y --- In Repeater-Builder@yahoogroups.com, "KA9QJG" [EMAIL PROTECTED] wrote: Can anyone tell Me of A Software Talking Clock program , I had a old radio Shack one that I had modified yrs ago on the repeater and it went bad and it is no longer made. Thanks Don Happy Holidays Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
RE: [Repeater-Builder] Did measurement of inductors change???
OK, a night's rest a fresh view can do wonders!! Looking at the Allied catalog, I see that they list ALL chokes in uH (micro-henries). As previously stated, I need a 2.2 mH choke. Looking near the end of thier list, I found a listing for 2.2K!! I guess I thought it would say 2200 uH or 2.2 mH I wasn't paying close enough attention to realize how they were using that K. I'm embarrased. thanks to everyone! -- Original Message -- Received: Thu, 23 Dec 2004 07:32:10 AM CST From: Ricardo Trujillo [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Did measurement of inductors change??? John, Those chokes are a lot smaller than what you need, they are specified in microhenrys, the mh you need is millihenrys. Ricardo W3/HK4BHA -Original Message- From: JOHN MACKEY [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 22, 2004 9:40 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Did measurement of inductors change??? I need to build a filter and it requires I have a few chokes of 2.2 mH value. So I look in the Newark Allied catalogs and all the chokes I am seeing are labeled µH (a u with a tail on the left) rather than mH Was I asleep for a long period of time they changed how inductors/chokes are labeled or am I missing something else? Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Did measurement of inductors change???
--- Neil McKie [EMAIL PROTECTED] wrote: JOHN MACKEY wrote: ... snip ... sort of like when capacitor measurements changed from uuF to pF) 35-40 years ago? I was doing this search late last night. Today, a little more fresh, I'll go back to work look at the Newark Allied catalogs again! Perhaps I'll see something I missed. If you continue to have problems there, I can look for you here. BTW, I have the current copy of EEM here. Neil DigiKey has two different 2.2mH inductors listed. www.digikey.com Joe __ Do you Yahoo!? Dress up your holiday email, Hollywood style. Learn more. http://celebrity.mail.yahoo.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Talking Clock
Or you can install IRLP and then add one of the speaking clock scripts available. Steve P. - Original Message - From: Coy Hilton [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, December 23, 2004 11:09 AM Subject: [Repeater-Builder] Re: Talking Clock One way of doing it is Install Echolink, It doesn't have to be connected to internet for this, and install Echotime. This way you can add a scheduled message or two. 73 AC0Y --- In Repeater-Builder@yahoogroups.com, KA9QJG [EMAIL PROTECTED] wrote: Can anyone tell Me of A Software Talking Clock program , I had a old radio Shack one that I had modified yrs ago on the repeater and it went bad and it is no longer made. Thanks Don Happy Holidays Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Advice on Business Band repeater
NO. Type acceptance has nothing to do with how someone built the system on what license the tech had. BTW - the GROL is not required for a tech to work on part 90 or 95 systems. -- Original Message -- Received: Thu, 23 Dec 2004 11:05:05 PM CST From: Benjamin Naber [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Advice on Business Band repeater If a guy were to have a GROL license and he built his own repeater to meet type acceptance(or close to), would it be classified as being so? ~Benjamin, KB9LFZ --- KI4AWK [EMAIL PROTECTED] wrote: I am a ham who is contemplating building a business-band repeater. I have a few questions that maybe you guys can answer and save me hours of reading and searching. I want to do this so that my family can stay in touch. The business license would be in the name of the family farm. I know that not everyone in my family is interested in radio enough to become a ham, but would definitely own a radio if they could communicate reliably. Cell phones are horrible. I do not want to use GMRS frequencies for three reasons: I am not impressed with the policing of the GMRS frequencies. Anyone can get a GMRS radio, and the line between GMRS and FRS and CB seems to be very blurry. I don't want my mom to be the one listening when someone starts being rude on our frequency. Reason two is that I want to be able to hook up a phone patch. This is strictly forbidden in GMRS. Reason three is the type acceptance rule that prohibits several quality radios from being used in GMRS. My questions: What kind of cost am I looking at for a repeater pair license? Does each user need a separate license? cost per user? Can I do the research and find a frequency pair myself, or do I have to go through a coordinator? (if so, what does that cost?) (We live in a rural area, Thomasville, GA. Finding a pair should not be hard. I am hoping for a pair in the 460 band, as I have a very nice mastr II for that band.) I have been monitoring a specific frequency, and did research through the FCC website on it for users in my area. What else should I do to get started? John Clark - KI4AWK = - ~Ben, KB9LFZ Got your radio on and listening? Then KEY the radio and say that you are! LET US USE WHAT WE HAVE!! __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Iso Tee Help again
All, Here is an article that will help with future questions on building the Iso-Tee. The article (somewhat humorous) was derived from the text presented by MDM Ted. Enjoy: http://www.repeater-builder.com/rbtip/iso-tee-project.html Merry Christmas, Kevin Custer W3KKC Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] CW-ID
Thanks for the many replies and suggestions. Needed the jolt to my tunnel vision. By adding a few dollars to the cost of a unit that IDed only, I choose the ICS Basic controller. That gives me the CW ID I wanted and some other useful features. THANKS AGAIN Paul K.Paul Boggs [EMAIL PROTECTED] Mountain Emergency Communications Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Zetron 38A wanted in UK
Hi All, I'm after a Zetron 38A contoller for a repeater project in the UK..Anyone got one lurking please? Cheers Dave G7UZN Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Zetron 38A wanted in UK
Dave, I have a Philips badged version of the 38A in use on GB3DX to lockout audio on the main Rx when remote rxs are in use. The unit seems to decode into the noise more than any mobile/portable set. I think a spare unit is available- contact me off list. [EMAIL PROTECTED] Ian-G8PWE -Walsall www.gb3dx.com - Original Message - From: dave_g7uzn [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, December 24, 2004 12:41 PM Subject: [Repeater-Builder] Zetron 38A wanted in UK Hi All, I'm after a Zetron 38A contoller for a repeater project in the UK..Anyone got one lurking please? Cheers Dave G7UZN Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Iso Tee Help again
THanks Kevin, greatly appreciated. Merry Christmas to all on the site. Mathew All, Here is an article that will help with future questions on building the Iso-Tee. The article (somewhat humorous) was derived from the text presented by MDM Ted. Enjoy: http://www.repeater-builder.com/rbtip/iso-tee-project.html Merry Christmas, Kevin Custer W3KKC Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] GMail Account
I could put one through a good test!kb9ilq at arrl.net Thanks! From: Rick - VA3RZS/Charlotte - VA3CMR [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 22, 2004 5:03 PM Subject: Re: [Repeater-Builder] GMail Account if there are still some people that would like .. I think I have 10 or so left to give away Rick Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] MSR 2000 Need access points for 9600 bps data TX and RX
I want to add a 9600 bps digital regenerator to my MSR 2000 repeaters. I need a service manual for VHF and a service manual for UHF or the access points to connect 9600 fsk transmit signal and 9600 fsk receive signal output. Also, need to know points to inhibit PL on Transmit. Thanks for any help you can give me. Russ, N4KOX Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Iso Tee Help again
--- Kevin Custer [EMAIL PROTECTED] wrote: Here is an article that will help with future questions on building the Iso-Tee. The article (somewhat humorous) was derived from the text presented by MDM Ted. I had to laugh about the following line: total time for assembly for a normal person probly 15-20 minutes. took me 2 hours i lost parts in the carpet. I have an old piece of carpet under my workbench in the basement to keep my feet warm. Someday I'm going to find all the parts that fell into it and got absorbed into a black void (or is it jusy my eyesight?). 73, Joe, K1ike Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf
Working on an IDA control shelf equipped UHF GE M2 base/repeater. Normally used to working with a lot of the older card rack style control shelves. Never saw this happen on other GE M2 repeaters or mobiles. Here's the situation: I am using the repeater system looking at RUS for PL detect and CAS for COS. Either running repeater in stock IDA repeat mode, or externally wired RC-85 controller. Using an HT on the bench if I hit the audio hard getting close to 4.5 KHz peaks the repeater would shut down in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues. I had originally thought perhaps it was something in the IDA control shelf, since this is my first IDA equipped machine. Probing around saw that U7A 4066 in the IDA was muting the RX audio vol/sql hi to TX audio hi path. That control line leads to RXMUTE (amoungest other sources) which started me looking at the PL decoder. Used a pl deck extender card to isolate the PL deck's RXMUTE decode signal from the IDA. Its the decoder for sure, rxmute high (pl detected) on low level audio and rxmute drops low (no pl decode) on loud voice peaks. This is a GE stock digital PL decoder. Swapped in another ge pl deck. Same deal. Swapped in a TS-64MII and it also does it, but not as bad. I even went so far as to look at R608 audio preamp pot inside the shielded box on the audio/sql board. It adjust the VOL/SQL hi signal toward the pl detector. Its adjusted within limits and didn't make any difference. I swapped out the GE RX front end and audio/sql boards with known good ones just for grins thinking distorted audio. Not the problem. Rechecked the rx chn element freq using the F-11.2 trick on the service monitor. It's dead zero'd. This effect happens on several HT's on hand. Main 'test bench' HT measured 650 hz pl dev and 4.5 KHz dev voice peaks. Audio source, my highly calibrated voice 'Ahh 1 2 3 W4XE' hihi.. Now I can fully understand a real distorted audio signal or one that's way over deviated out of the receiver limits not being decodable. But, I can't ever remember being able to talk off a pl decoder on innumberable GE M2's I've had on the bench before. The only new variable is this IDA shelf and maybe the system interface board in the drawer. Haven't compared it to a card rack version to see if they are different. But, not much to go wrong on that system interface board in any case. Thought I'd throw out an email while everyone is sitting at home dreaming about sugar plums.. Has anyone else seen this problem? 73's and happy holidays Ralph W4XE Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Christmas Present Gmail invitations
I have 4 Gmail invitations. First four to email me gets them. Off List please... Mitch KD4HTW Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf
Most likely, your HT is part or all of the problem. The CTCSS is supposed to be injected after the limiter so this problem (called talk-off) does not happen. In some radios, the CTCSS is mixed with the mike audio prior to the limiter, and then, talk-off happens. Jeff At 01:24 PM 12/24/2004, you wrote: Working on an IDA control shelf equipped UHF GE M2 base/repeater. Normally used to working with a lot of the older card rack style control shelves. Never saw this happen on other GE M2 repeaters or mobiles. Here's the situation: I am using the repeater system looking at RUS for PL detect and CAS for COS. Either running repeater in stock IDA repeat mode, or externally wired RC-85 controller. Using an HT on the bench if I hit the audio hard getting close to 4.5 KHz peaks the repeater would shut down in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues. I had originally thought perhaps it was something in the IDA control shelf, since this is my first IDA equipped machine. Probing around saw that U7A 4066 in the IDA was muting the RX audio vol/sql hi to TX audio hi path. That control line leads to RXMUTE (amoungest other sources) which started me looking at the PL decoder. Used a pl deck extender card to isolate the PL deck's RXMUTE decode signal from the IDA. Its the decoder for sure, rxmute high (pl detected) on low level audio and rxmute drops low (no pl decode) on loud voice peaks. This is a GE stock digital PL decoder. Swapped in another ge pl deck. Same deal. Swapped in a TS-64MII and it also does it, but not as bad. I even went so far as to look at R608 audio preamp pot inside the shielded box on the audio/sql board. It adjust the VOL/SQL hi signal toward the pl detector. Its adjusted within limits and didn't make any difference. I swapped out the GE RX front end and audio/sql boards with known good ones just for grins thinking distorted audio. Not the problem. Rechecked the rx chn element freq using the F-11.2 trick on the service monitor. It's dead zero'd. This effect happens on several HT's on hand. Main 'test bench' HT measured 650 hz pl dev and 4.5 KHz dev voice peaks. Audio source, my highly calibrated voice 'Ahh 1 2 3 W4XE' hihi.. Now I can fully understand a real distorted audio signal or one that's way over deviated out of the receiver limits not being decodable. But, I can't ever remember being able to talk off a pl decoder on innumberable GE M2's I've had on the bench before. The only new variable is this IDA shelf and maybe the system interface board in the drawer. Haven't compared it to a card rack version to see if they are different. But, not much to go wrong on that system interface board in any case. Thought I'd throw out an email while everyone is sitting at home dreaming about sugar plums.. Has anyone else seen this problem? 73's and happy holidays Ralph W4XE Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Help: GE M2 PL decode dropout on voicepeaks and IDA control shelf
Ralph, The symptoms you describe are those of CTCSS distortion due to limiting of excessive deviation. If your authorized emission is 20K0F3E, the sum of voice and CTCSS deviations cannot exceed 5.0 kHz. The measurements you cited for your test bench HT reveal excessive deviation at 5.15 kHz. But, that's not the main issue here. Ideally, the CTCSS modulation should be in the range of 500 to 700 Hz; any more does absolutely nothing for improving detection, and it increases the chances for a buzz to be heard in the received audio. The majority of CTCSS decoders will reliably detect the tone with a CTCSS deviation as low as 200 Hz. If the CTCSS encoder in each user radio was adjusted to produce no more than 700 Hz deviation, then the microphone audio limiter can and should be set to limit voice deviation to 4.3 kHz. Unfortunately, some radios are designed so that the CTCSS modulation is mixed with the voice ahead of the limiter, and this almost guarantees that repeater talk-off will occur. Nearly all Amateur portable radios are designed this way, and there is seldom any means to separately adjust the CTCSS level. Compounding this deficiency is the tendency for economy-minded manufacturers to use far more CTCSS deviation than is necessary, just to make sure there's enough! The CTCSS modulation should be mixed with the voice modulation AFTER the limiter. If you can adjust your portable and mobile radios for the deviation levels noted above, your talk-off problems should go away. 73, Eric Lemmon WB6FLY At 01:24 PM 12/24/2004, you wrote: Working on an IDA control shelf equipped UHF GE M2 base/repeater. Normally used to working with a lot of the older card rack style control shelves. Never saw this happen on other GE M2 repeaters or mobiles. Here's the situation: I am using the repeater system looking at RUS for PL detect and CAS for OS. Either running repeater in stock IDA repeat mode, or externally wired RC-85 controller. Using an HT on the bench, if I hit the audio hard getting close to 4.5 kHz peaks the repeater would shut down in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues This effect happens on several HT's on hand. Main 'test bench' HT measured 650 Hz pl dev and 4.5 kHz dev voice peaks. Audio source, my highly calibrated voice 'Ahh 1 2 3 W4XE' hihi... Now I can fully understand a real distorted audio signal or one that's way over deviated out of the receiver limits not being decodable. But, I can't ever remember being able to talk off a pl decoder on innumerable GE M2's I've had on the bench before... Has anyone else seen this problem? 73's and happy holidays Ralph W4XE Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf
Our Temple Texas ARC owns an Ericsson M3 2M repeater with 3 remote site voting receivers using GE Phoenix mobiles for 438 Mhz voting receiver link radios. We had lots of trouble with cheap ham radios chopping on voice peaks for several reasons. Ericsson's philosophy is to use Channel Guard to prevent unwanted signals from activating the repeater. They use dsp in the system module to decode the Channel Guard tone. Ham talkies and mobiles chopped pretty badly. Commercial radios did not. I found first of all that most off the shelf talkies, Icom W32, Yaesu, etc generally had peak deviation set at +/- 6.5 Khz using voice modulation and either my HP8921 or COM 120B to measure. Another generalization, ham equipment uses tone and digital coded squelch as an after thought. No voice band filters the remove voice components below 300 hz. From the modulator causing the voice modulation low frequency components to compete with Channel Guard tones. Add to this a little excessive transmitter deviation and the system chops. Ericsson TAC provided a software patch that AND ed tone and carrier squelch so that once tone was detected it could drop and as long as carrier squelch was open the repeater would remain open. This patch cured the problem, except on the Phoenix voting receivers. I also find that Kenwood, TKR720's and 750's are much more tolerant of crappy signals. While on my soap box, The Texas VHF FM Society, coordinator for repeaters in Texas recommends a maximum instantaneous peak transmitter deviation of +/- 4.0 Khz. Proper mic input gain and peak deviation limiting goes a long way toward helping choppy signals. Mic Gain and Transmitter deviation are loosely related that in setting up a transmitter, turn the mic gain to max, and set the deviation limiter to say 4.0 Khz. Then reduce the mic gain to taste. Helper used to produce an instrument to measure mic gain, called modulation density - never did catch on. Anyhow, my two cents. Best 73 and Merry Christmas to all, Steve NU5D -Original Message- From: Jeff Otterson [mailto:[EMAIL PROTECTED] Sent: Friday, December 24, 2004 3:22 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help: GE M2 PL decode dropout on voice peaks and IDA control shelf Most likely, your HT is part or all of the problem. [Steve Bosshard (NU5D)] Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Help: GE M2 PL decode dropout on voice peaks and IDA control shelf
Hi Ralph, I've never seen this before but I have a few questions. Is it possible that your highly calibrated Voice has components at this PL freq. that could trigger the reverse cut off feature or cancil out the received tone? Try looking at the input to the tone decoder board for the tone while doing the test. Try a few different CG frequencies. . May be it's that youre using PL on a GE and not CGGRIN...(;-) MERRY CHRISTMAS !!! AC0Y --- In Repeater-Builder@yahoogroups.com, Ralph Hogan [EMAIL PROTECTED] wrote: Working on an IDA control shelf equipped UHF GE M2 base/repeater. Normally used to working with a lot of the older card rack style control shelves. Never saw this happen on other GE M2 repeaters or mobiles. Here's the situation: I am using the repeater system looking at RUS for PL detect and CAS for COS. Either running repeater in stock IDA repeat mode, or externally wired RC-85 controller. Using an HT on the bench if I hit the audio hard getting close to 4.5 KHz peaks the repeater would shut down in PL mode (127.3 Hz FWIW). If I run in COS only mode, no issues. I had originally thought perhaps it was something in the IDA control shelf, since this is my first IDA equipped machine. Probing around saw that U7A 4066 in the IDA was muting the RX audio vol/sql hi to TX audio hi path. That control line leads to RXMUTE (amoungest other sources) which started me looking at the PL decoder. Used a pl deck extender card to isolate the PL deck's RXMUTE decode signal from the IDA. Its the decoder for sure, rxmute high (pl detected) on low level audio and rxmute drops low (no pl decode) on loud voice peaks. This is a GE stock digital PL decoder. Swapped in another ge pl deck. Same deal. Swapped in a TS-64MII and it also does it, but not as bad. I even went so far as to look at R608 audio preamp pot inside the shielded box on the audio/sql board. It adjust the VOL/SQL hi signal toward the pl detector. Its adjusted within limits and didn't make any difference. I swapped out the GE RX front end and audio/sql boards with known good ones just for grins thinking distorted audio. Not the problem. Rechecked the rx chn element freq using the F-11.2 trick on the service monitor. It's dead zero'd. This effect happens on several HT's on hand. Main 'test bench' HT measured 650 hz pl dev and 4.5 KHz dev voice peaks. Audio source, my highly calibrated voice 'Ahh 1 2 3 W4XE' hihi.. Now I can fully understand a real distorted audio signal or one that's way over deviated out of the receiver limits not being decodable. But, I can't ever remember being able to talk off a pl decoder on innumberable GE M2's I've had on the bench before. The only new variable is this IDA shelf and maybe the system interface board in the drawer. Haven't compared it to a card rack version to see if they are different. But, not much to go wrong on that system interface board in any case. Thought I'd throw out an email while everyone is sitting at home dreaming about sugar plums.. Has anyone else seen this problem? 73's and happy holidays Ralph W4XE Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
